I've also noticed that when I've put my car into park with the P button to wait in a parking lot, etc.. is it the auto/stop start feature initiating an auto stop when you go into park? that's what I suspect, but haven't experimented to see if it would do it with auto stop/start disabled. the nice thing is, with the electronic gear selector, if you are done driving, just hit the ignition button to turn the vehicle off while still in drive. the vehicle will automatically go into park and shut off with one press.